Valve for hydraulic machinery.



110.738,69?. -PATE-NTBD SEPT. 8,' 190.31,

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VALVE FOR HYDRAULIG MAGHINBRY..

x APPLICATION' FILED MAY 13, 1902. No MODEL. 2 SHEETS-snm 1.

10.738,697. PATENTED SEPT. 8,1903. A. PATTERSON.

VALVE FOR HYDRAULIG MACHINERY.

. APPLIOATIGN FILED MAY 13, 1902. N0 MODEL. 2 SHEETS-,SHEET 2.

Witnesses: lm/enor.

:Rs cu, PHo'roLrruo.. wAslmuTon n c Nofvsaee?.

ANTHONY PATTERSON,

Patented September 8, 1903.A

PATENT OFFICE.

OF CARDIFF, ENGLAND.

VALVE FOR HY'DRAU LIC MACHINERY.

'SPECIFICATION forming part of Letters Patent N o. 738,697, dated September 8, 1903.

Application led May 13,1902.

T all wiz/071@ it may concern:

Beit known that I, ANTHONY PATTERSON, a

subject of the King of Great Britain, residing at Cardiff, in the county of GlamorgamFngland, have invented certain new and useful:

Improvements in Valves for Hydraulic Ma` chinery and I do hereby declare the following to be a full, clear, ande'xact description ofthe invention, such as` willl enable others skilled `in the art to which it appertains to make and use the same.

` y My invention relates to valves for hydraulic engines and for hydraulic machinery. By`

the improvements in which my invention consists such valves are of enhanced efficiency through being more completely Water-tight.

Theyare more thoroughlybalanced,and hence trol.

center piece of avalve constructed in accordance With my invention. This form of valve p is a working valve for a hydraulic reversingengne--that is to say, it is the valve by which Water is admitted to and exhausted from the cylinder of such engine. Fig. 2 is a section, also on the centerline of the center piece, but at a right angle to the section, Fig. l. Fig. 3 is a transverse section on the line A B, Fig. l. Fig. 4 is a transverse section on the line C D, Fig. 2.

The valve has two throats b and c, which extend in opposite directions from the center piece a, the throats b and c and the center piece a. being formed in one piece. The outer v 4 ends ofthe throats are closed With screw.-

plugs w, which are inserted after casting to iill apertures left for ,convenience in casting. At the outerend of the throat b vis a couplingbox d. A similar coupling-box e is fitted on the outer end ofthe throat c. The couplingboxes are connected to the casing c' by bolts and nuts, as.` shown in Fig. 2. By branches extending from the coupling-boxes the water serai No. 107,175. cro man `supply and discharge pipes are connected to .the valve. One such branch only is seennamely, e', Fig. 4. As will be understood, the throat b is the Water-supply throat and the throat o is the exhaust-throat. The apertures for supply and exhaust are so arranged that the line of iiow of the Water therethrough is at right angles or approximately right angles to its flow in the valve-throats. This disposition of the apertures causes reduction of shock on admission of supply.

The center piece a is conical in shape and serves to connect the throats b and c. This center piece is provided with water-passages f, g, and h. The passage f extends coinpletely through the center piece near one diameter thereof and is connected with the throat b. The passages g and 7L are located on either side of the passage f in the center piece a, andare nearly opposite each. other and communicate With the throat c. The passage f has a port f at one end and a port f2 at the other end arranged to communicate with the ports 7o' andj2 in the casing, respectively,

when the center piece a is inV the proper positions. The passage g has a port g', arranged to register with the port k2, and the passage h has a port h', arranged to register with 'the port j at certain positions of the centerpiece.

The center piece a is embraced by a casing '12, which has branches i and i2, by which communication is established with the engine. In the casing i' are two Water-passagesj and la. The passage k has two ports 7s and 7a2.

The valve is fitted with a stuffing-box Z, which is stuffed with compressible or yielding packing, such as hemp packing or the like, and by the use of the stuffing-box thus packed the valve can be kept water-tight by tightening up the gland, which can be done to great nicety.

fm m are the levers by which the valve is connected for actuation to the engine.

The water admitted through one' of the throats to the valve is, as` the valve is oscillated bythe engine, directed by the passages and ports above mentioned to each side alternately of the engine-piston and is exhausted through theother throat.

In valves constructed and arranged in accordance with my invention the Water acts The passage j has two ports j and j# approximately evenly on all sides, and thus a better balance is obtained. A

' Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In valves for hydraulic machinery, the combination of a valve composed of a center piece and two long hollow throats all made integral with each other, one of said throats terminating in a passage extending entirely through said center piece, and said center piece being made conical in form and pro-V vided with openings oppositely arranged on either side of said central passage, and said throats being provided near their outer ends with inlet and exhaust apertures respectively arranged at right angles to said throats, with a conical casing surrounding said center piece, and coupling-boxes separated from and independent of said casing and surrounding the inlet and exhaust apertures in said throats respectively, substantially as described.

2. In valves for hydraulic machinery, the combination of a valve composed of a conical center piece and two long hollow throats, one on each side of said center piece and all made integral with each other, one of said throats terminating in a passage extending entirely through said center piece, and said center piece being provided with openings oppositely arranged on either side of said central passage, and said throats being provided near' their outer ends with inlet and outlet apertures, respectively, arranged at right angles to said throats, a conical casing surrounding said center piece,couplingboxes surrounding the inlet and exhaust apertures in said throats respectively, said coupling-boxes being separated from and yindependent of said casing, and means connecting said coupling-boxes with said casing, substantially as described.

3. In valves for hydraulic machinery, the combination of a valve composed of a conical center piece and two long hollow throats all made integral with each other, one of said throats terminating in a passage extending entirely through said center piece, said center piece being provided with openings oppositely arranged on either side of said central pas sage, and said throats being provided near their outer ends with inlet and exhaust aperA tures, respectively, and arranged at right angles to said throats, a conical casing surrounding said center piece, and shifting mechanism connected 4to'said throats on either side of said center piece, substantially as described. In testimony whereof I affix my signature in presence of two witnesses.

ANTHONY PATTERSON. Witnesses:

CLARA EMILY WAKEFORD, STANLEY -RALPH PATTERSON. 

